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31.

Thiol-dependent Redox Mechanisms in the Modification of ATP-Sensitive Potassium Channels in Rabbit Ventricular Myocytes

JinHan, NariKim, DangVanCuong, ChunghuiKim, EuiyongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2003, Vol.7 No.1 4 15-23 (9 pages)

JinHan, NariKim, DangVanCuong, ChunghuiKim, EuiyongKim 저
...
- 3,000원
Cellular redox state is known to be perturbed during ischemia and that Ca2⁢ and K⁢ channels have been shown to have functional thiol groups. In this study, the properties of thiol redox modulation of the ATP-sensitive K⁢ (KATP) channel were examined in rabbit ventricular myocytes. Rabbit ventricular myocytes were isolated using a Langendorff column for coronary perfusion and collagenase. Single-channel currents were measured in excised membrane patch configuration of...
32.

Decreased Expression of Aquaporin-2 Water Channels in the Kidney in Rats Treated with Reserpine

JongUnLee, YoonWhaOh, SunmiKim, SooWanKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.4 3 307-313 (7 pages)

JongUnLee, YoonWhaOh, SunmiKim, SooWanKim 저
...
- 3,000원
a sympathetic neural mechanism regulating the expression of aquaporin (AQP) water channels in the kidney was investigated. Male Sprague-Dawley rats were treated with reserpine (1 mg/kg, IP), and the expression of AQP1-4 proteins was determined in the kidney one day thereafter. Following the treatment with reserpine, the systolic blood pressure measured in a conscious state was significantly decreased in the experimental group compared with that in the control (83⁑8 vs 124⁑6 mmHg; n=6...
33.

Effect of Propofol on Ion Channels in Acutely Dissociated Dorsal Raphe Neuron of Sprague-Dawley Rats

Bong-JaeLee, Moo-IlKwon, Min-ChulShin, Youn-JungKim, Chang-JuKim, SoonAeKim, Ee-HwaKim, Joo-HoChung 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.2 10 189-197 (9 pages)

Bong-JaeLee, Moo-IlKwon, Min-ChulShin, Youn-JungKim, Chang-JuKim, SoonAeKim, Ee-HwaKim, Joo-HoChung 저
...
- 3,000원
produced by the nicotinic acetylcholine- and glutamate-responsive channels, rat dorsal raphe neurons were acutely dissociated and the nystatin-perforated patch-clamp technique under voltage- clamp conditions was used to observe their responses to the administration of propofol. Propofol evoked ion currents in a dose-dependent manner, and propofol (10⁣4 M) was used to elicit ion currents through the activation of GABAA, glycine, nicotinic acetylcholine and glutamate receptors. Propofol at a...
34.

Activation of ATP-sensitive Potassium Channels by the Predominant Metabolite of Isoflurane in Rabbit Ventricular Myocytes

JinHan, NariKim, EuiyongKim, SungjuKim, KangheeCho 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 11 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.2 7 165-175 (11 pages)

JinHan, NariKim, EuiyongKim, SungjuKim, KangheeCho 저
...
- 4,000원
in a concentration-dependent fashion. The concentration of TFA for half-maximal activation and the Hill coefficient were 0.03 mM and 1.2, respectively. TFA did not affect the single channel conductance of KATP channels. Analysis of open and closed time distributions showed that TFA increased burst duration and decreased the interburst interval without changes in open and closed time distributions shorter than 5 ms. TFA diminished ATP sensitivity of KATP channels in a concentration-response...
35.

Block of ATP-Sensitive K Channels Expressed in Xenopus Oocytes by Dimethyl Sulfoxide

JinBongParkSooWanChae 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 7 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.2 6 157-163 (7 pages)

JinBongParkSooWanChae 저
...
- 3,000원
The effects of dimethyl sulfoxide (DMSO) were studied in two groups of Xenopus oocytes, one expressing ATP sensitive K (KATP) channel comprised of sulfonylurea receptor SUR1 and inwardly rectifying K channel subunit Kir6.2, and the other expressing renal KATP channel ROMK2. At concentrations of 0.3∼10% (vol/vol) DMSO inhibited whole cell Kir6.2/SUR1 currents elicited by bath application of sodium azide (3 mM) in a concentration-dependent manner. The inhibition constant and Hill coefficient...
36.

The Alteration of Ca2+-activated K+ Channels in Coronary Arterial Smooth Muscle Cells Isolated from Isoproterenol-induced Cardiac Hypertrophy in Rabbit

NariKim, JinHan, EuiyongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 10 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2001, Vol.5 No.2 5 147-156 (10 pages)

NariKim, JinHan, EuiyongKim 저
...
- 3,000원
amplitudes and the slope conductance of coronary KCa channels were decreased without changes of the channel kinetics in isoproterenol-induced cardiac hypertrophy; (2) the sensitivity of coronary KCa channels to the changes of intracellular concentration of Ca2⁢ was reduced in isoproterenol-induced cardiac hypertrophy. From above results, we suggest for the first time that the alteration of KCa channels are involved in impaired coronary reserve in isoproterenol-induced cardiac hypertrophy.
37.

Modulation of Ca2+-Activated Potassium Channels by cGMP- Dependent Signal Transduction Mechanism in Cerebral Arterial Smooth Muscle Cells of the Rabbit

JinHan, NariKim, KwangbokLee, EuiyongKim 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 6 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.6 2 439-444 (6 pages)

JinHan, NariKim, KwangbokLee, EuiyongKim 저
...
- 3,000원
2A (PP2A, 1 U/ml). In the presence of okadaic acid (OA, 5 nM), PP2A had no effect on the channel activity. The KCa channel activity spontaneously decayed to the control level upon washout of ATP, cGMP and PKG, and this was prevented by OA (5 nM) in the medium. These results suggest that the PKG-mediated phosphorylations of KCa channels, or some associated proteins in the membrane patch increase the activity of the KCa channel, and the activation may be associated with the vasodilating action.
38.

ATP-sensitive K+ Channels Structure, Function, and Physiological Roles

SusumuSeino 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 4 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 2000, Vol.4 No.4 1 271-274 (4 pages)

SusumuSeino 저
...
- 1,500원
39.

The Effects of Intracellular Monocarboxylates on the ATP-sensitive Potassium Channels in Rabbit Ventricular Myocytes

NariKim, JinHan, Eui-YongKim, Won-KyungHo, YungE.Earm 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 9 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.5 6 581-589 (9 pages)

NariKim, JinHan, Eui-YongKim, Won-KyungHo, YungE.Earm 저
...
- 3,000원
mechanism of the ATP-sensitive potassium channels (KATP channels) is yet to fully explained. This study was carried out to investigate the effects of intracellular application of monocarboxylates (acetate, formate, lactate, and pyruvate) on KATP channels in isolated rabbit ventricular myocytes. Single channel currents of KATP channels were recorded using the excised inside-out or permeabilized attached (open-cell) patch-clamp technique at room temperature. Intracellular application of acetate,...
40.

Dual Action of d-Tubocurarine on Large-Conductance Ca2+-activated K+ Channels from Rat Brain Reconstituted into Planar Lipid Bilayer

SungkwonChungJungHoonShin 대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 5 Pages

대한생리학회-대한약리학회 The Korean Journal of Physiology & Pharmacology 1998, Vol.2 No.5 2 549-553 (5 pages)

SungkwonChungJungHoonShin 저
...
- 1,500원
Using the planar lipid bilayer method, we investigated the effect of d-tubocurarine (dTC) on the extracellular side of large-conductance Ca2+-activated K+ channel from rat brain. When the initial open probability (Po) of the channel was relatively high, dTC decreased channel activity in a concentration dependent manner. In contrast, when the initial Po was lower, sub-micro molar dTC increased channel activity by destabilizing the closed states of the channel. Further addition of dTC up to micro...

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